Unleavened Bread

Within the spring season of Passover lies the first significant week-long festival of the year. It's called Unleavened Bread and it's a seven-day feast with a high Sabbath on the first day and on the seventh. During this time, no one that calls the name of Yahweh their god is supposed to eat any leavened bread. All bread is to be unleavened. But why? Virtually all the sacrifices in the temple that require bread specifically say that it has to be unleavened bread. What's the deal with leaven, anyway, that makes its use seem practically banned? This article will answer that question.